Jugadores conectados ahora

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already mark the tool as read-only and open-world, so no safety warning is required. The description adds behavioral specificity beyond the annotations by defining the exact output as the current total active player count, which is valuable context for invocation.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, focused sentence with no filler. It front-loads the key output and immediately specifies the context, making it easy for an agent to parse.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a one-parameter, read-only Steam endpoint with no output schema and full schema coverage, the description is sufficient. It tells the agent what value is returned, for what kind of input, and the temporal context, which is enough to select and invoke the tool correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema fully documents the only parameter, 'appid', as 'AppID del juego', providing 100% coverage. The description does not add meaningful parameter detail beyond that, so the baseline score of 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states a specific verb ('Devuelve'), a concrete resource ('cantidad total de jugadores activos en un juego'), and a temporal scope ('en este momento en Steam'), which distinguishes it from sibling tools focused on recent games, achievements, friends, and profiles.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description's focus on current active player count makes the usage context obvious, but it does not explicitly name alternatives or when-not conditions. The sibling names and the clear temporal wording are enough for an agent to select it correctly.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.